Archive for Lughnasadh

Lá Saoire i mí Lúnasa

Posted in Biographical, Education, mathematics, Maynooth with tags , , , , on August 3, 2026 by telescoper

Today, Monday 3rd August 2026, being the first Monday in August, is a Bank Holiday in Ireland. This holiday was created by the Bank Holiday Act of 1871 when Ireland was under British rule. While the August Bank Holiday was subsequently moved to the end of August in England and Wales, it has remained at the start of August in Ireland. It has been a nice morning weather-wise, but in true Bank Holiday fashion we’re promised heavy rain later on, with a chance of thunderstorms.

As I mentioned on Saturday, the first day of August marks the old pagan festival of Lughnasadh, named after the God Lugh, on which is celebrated the beginning of the harvest season. This coincides with the English Lammas Day, one of many Christian festivals with pagan origins. Traditionally this is the start of the harvest season and is celebrated accordingly, with rites involving the first fruit and bread baked from flour obtained from the first corn. It is also one of the cross-quarter days, lying roughly half-way between the Summer Solstice and the Autumnal Equinox (in the Northern Hemisphere).

Two years ago at this time I was still on sabbatical. That seems like ages ago! When I resumed teaching, in September 2024, I had to teach two modules I’d never taught before: a fourth-year Mathematical physics course on Differential Equations and Complex Analysis and a second-year Engineering Mathematics course. I am doing both of these again so resumption of teaching in September won’t be as challenging, although I will be changing a few things in the light of last year’s experience. Lectures start on Monday 22nd September.

After I return to work tomorrow the next big item on the agenda is the repeat examination period, which starts on Wednesday August 5th. The first paper for which I have responsibility is on Friday 7th, but I won’t be able to get the scripts until Monday 10th so I have a bit of time to do other stuff before I start marking. I am not expecting many scripts, actually, so it shouldn’t be too onerous a task to get them done promptly.

Next week also sees the deadline for the dissertations for our MSc course. I have been supervising a student this year and will probably be asked to give comments on the final draft of his report. Then the MSc students have their presentations on Friday 14th August. They have all completed the taught component of the course so the only thing left to assess are these projects. Students will get their final results later this month, along with the resitting undergraduate students.

In between all this we have our Eclipse Event on August 12th. This sold out very quickly so we expect a good turnout. The event was advertised quite a bit in the local media, e.g. here and here:

The viewing of the eclipse will of course depend on the weather, but we have talks lined up indoors and a pop-up planetarium so I hope people will turn up even if the weather isn’t great. Although it is officially full, there may be a few returns, so it is worth checking on the day to see if we can fit you in.

Anyway, after the repeat examinations and project assessments are done, the marks uploaded, and the Undergraduate and Postgraduate Examination Boards have done their work, the next job will be to prepare for the new intake of students. This year’s Leaving Certificate results will be announced on Friday 21st August, at which point we’ll see how many students (if any) we have studying Physics next academic year (which, if all goes to plan, will be my penultimate…)

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Lughnasadh – The Start of Autumn

Posted in Biographical, Education, Maynooth with tags , , , , , on August 1, 2026 by telescoper

Today is 1st August, which is marked by the old Celtic festival of Lughnasadh, named after the God Lugh. This coincides with the English Lammas Day, one of many Christian festivals with pagan origins. The word for August in modern Irish is Lúnasa, a name derived from the old Celtic word.

Traditionally 1st August marks the start of the harvest season and is celebrated accordingly, with rites involving the first fruit and bread baked from flour obtained from the first corn. It is also one of the cross-quarter days, lying roughly half-way between the Summer Solstice and the Autumnal Equinox (in the Northern Hemisphere).

In the Northern hemisphere, from an astronomical point of view, the solar year is defined by the two solstices (summer, around June 21st and winter, around December 21st) and the equinoxes (Spring, around March 21st, and Autumn, around September 21st). These four events divide the year into four roughly equal parts of about 13 weeks each. If you divide each of these intervals in two you divide the year into eight pieces of six and a bit weeks each. The dates midway between the astronomical events mentioned above are (roughly) :

  • 1st February: Imbolc (Candlemas)
  • 1st May: Beltane (Mayday)
  • 1st August: Lughnasadh (Lammas)
  • 1st November: Samhain (All Saints Day)

The names I’ve added are taken from the Celtic/neo-Pagan (and Christian terms) for these cross-quarter days. These timings are rough because the dates of the equinoxes and solstices vary from year to year. Imbolc is often taken to be the 2nd of February (Groundhog Day) and Samhain is sometimes taken to be October 31st, Halloween. But hopefully you get the point. All four of thes days have a Bank Holiday associated with them (on the first Monday after the respective date); this Monday (3rd August) is a Bank Holiday in Ireland.

Some folk in Ireland regard August 1st as the first day of Autumn, just as 1st February is regarded as the first day of Spring and 1st May is the start of Summer. Indeed, our annual cycle of repeat examinations at Maynooth always happens in early to mid-August and these examinations are officially called the Autumn repeats. I rest my case. In my time here I have also noticed that May, June and July do tend to have significantly better weather than August, although I’m pleased to say that the weather isn’t particularly autumnal today.

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Lá Saoire i mí Lúnasa

Posted in Biographical, Education, mathematics, Maynooth with tags , , , , on August 4, 2025 by telescoper

Today, Monday 4th August 2024, being the first Monday in August, is a Bank Holiday in Ireland. This holiday was created by the Bank Holiday Act of 1871 when Ireland was under British rule. While the August Bank holiday was subsequently moved to the end of August in England and Wales, it has remained at the start of August in Ireland.

We have had some proper Bank Holiday weather, in the form of Storm Floris. Although the worst of this passed to the West of Maynooth, the winds were powerful enough to blow one of my wheelie bins over.

As I mentioned last week, the first day of August marks the old pagan festival of Lughnasadh, named after the God Lugh, on which is celebrated the beginning of the harvest season. This coincides with the English Lammas Day, one of many Christian festivals with pagan origins. Traditionally this is the start of the harvest season and is celebrated accordingly, with rites involving the first fruit and bread baked from flour obtained from the first corn. It is also one of the cross-quarter days, lying roughly half-way between the Summer Solstice and the Autumnal Equinox (in the Northern Hemisphere).

I’m reminded that this time last year I was still on sabbatical. That seems like ages ago. When I resumed teaching last September I had to teach two modules I’d never taught before: a fourth-year Mathematical physics course on Differential Equations and Complex Analysis and a second-year Engineering Mathematics course. This time should be a bit easier as I get to do both of these again. Over the year I also had a final-year undergraduate project student and an MSc student. Both have been a pleasure to work with. The Masters course lasts a calendar year so that one isn’t quite finished, but the deadline for handing in their dissertation is close, next Monday (11th) in fact.

After I return to work tomorrow the next big item on the agenda is the repeat examination period, which starts on Wednesday August 6th. The fates have conspired to require me to be “on call” for four papers next Saturday (two of my own and two covering for a colleague): three of these are scheduled at 12.30 and the other one at 15.30 so I’l have to be by the phone all afternoon in case any matters arise. I also have three others scattered through the approximately ten days of the examination period.

After the repeat examinations are done, the marks uploaded, and the Examination Board has done its work, the next job will be to prepare for the new intake of students. This year’s Leaving Certificate results will be announced on Friday 22nd August, at which point we’ll see how many students (if any) we have studying Physics next academic year which, if all goes to plan, will be my antepenultimate…

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The Dead Month

Posted in History with tags , , on July 31, 2025 by telescoper

So we’ve reached the last day of July, and tomorrow is 1st August which is the modern date of the ancient festival of Lughnasadh, although we have to wait until next Monday (4th) for the corresponding Bank Holiday. Lughnasadh can be thought of as marking the onset of he harvest season, and is the pagan forerunner of the Christian harvest festivals I remember from when I was a kid.

As I learnt from this article, the last Sunday in July has been celebrated since ancient times as Garland Sunday, Bilberry Sunday or Reek Sunday. It was a day to mark the end of Hungry July (or in the article mentioned below, The Dead Month) and anticipate the harvest to come.

I hadn’t realized that July was a time of shortage in olden times. I’d always thought the summer months would be a time of plenty, but in July the stocks of food such as grain put aside at the last harvest would often be running low and people who usually depended on farmed produce would be forced to turn to berries, etc.

Anyway. here’s a blog post I stumbled across that says more about this

The Dead Month: The Hunger & Thirst of July

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Lá Saoire i mí Lúnasa

Posted in Biographical, Education, mathematics, Maynooth with tags , , , on August 5, 2024 by telescoper

Today, Monday 5th August 2024, being the first Monday in August, is a Bank Holiday in Ireland. This holiday was created by the Bank Holiday Act of 1871 when Ireland was under British rule. While the August Bank holiday was subsequently moved to the end of August in England and Wales, it has remained at the start of August in Ireland. Today is also a Bank Holiday in Scotland, though the Scots have the best of both worlds and have a holiday at the end of August too.

The first day of August marks the old pagan festival of Lughnasadh, named after the God Lugh, on which is celebrated the beginning of the harvest season. This coincides with the English Lammas Day one of many Christian festivals with pagan origins. Traditionally this marks the start of the harvest season and is celebrated accordingly, with rites involving the first fruit and bread baked from flour obtained from the first corn. It is also one of the cross-quarter days, lying roughly half-way between the Summer Solstice and the Autumnal Equinox (in the Northern Hemisphere).

It seems to be a tradition in Maynooth that the Bank Holidays in May and August are are adjacent to examinations. This year they start on Wednesday (7th August). I am, however, still on sabbatical so I don’t have any correcting duties. That doesn’t mean I can’t wish all the students taking repeat examinations all the best in their endeavours.

This month is the last of my sabbatical. I officially return to normal duties on 1st September, but that is a Sunday so I won’t return to the office until Monday 2nd September. That is if I have an office. There’s a lot of reorganization going on and currently I don’t know where I’ll be based. At least I know what I’ll be teaching in Semester 1 though: a fourth-year Mathematical physics course on Differential Equations and Complex Analysis and a second-year Engineering Mathematics course. These are not what I would have chosen if I had a free hand (I’d rather teach physics than mathematical methods) but I’ve had it excessively easy for the last year so can’t complain. With a bit of luck I might get a project student or two as well, if the students haven’t forgotten who I am!

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Lá Saoire i mí Lúnasa

Posted in Biographical, Education, Maynooth with tags , , , on August 7, 2023 by telescoper

Today, Monday 7th August 2023, being the first Monday in August, is a Bank Holiday in Ireland. This holiday was created by the Bank Holiday Act of 1871 when Ireland was under British rule. While the August Bank holiday was subsequently moved to the end of August in England and Wales, it has remained at the start of August in Ireland. Today is also a Bank Holiday in Scotland, though the Scots have the best of both worlds and have a holiday at the end of August too.

I recently mentioned that 1st August marks the old Celtic festival of Lughnasadh, named after the God Lugh, on which is celebrated the beginning of the harvest season. This coincides with the English Lammas Day one of many Christian festivals with pagan origins. Traditionally this marks the start of the harvest season and is celebrated accordingly, with rites involving the first fruit and bread baked from flour obtained from the first corn. It is also one of the cross-quarter days, lying roughly half-way between the Summer Solstice and the Autumnal Equinox (in the Northern Hemisphere).

In the Northern hemisphere, from an astronomical point of view, the solar year is defined by the two solstices (summer, around June 21st and winter, around December 21st) and the equinoxes (spring, around March 21st, and Autumn, around September 21st). These four events divide the year into four roughly equal parts of about 13 weeks each.

Now, if you divide each of these intervals in two you divide the year into eight pieces of six and a bit weeks each. The dates midway between the astronomical events mentioned above are (roughly) :

  • 1st February: Imbolc (Candlemas)
  • 1st May: Beltane (Mayday)
  • 1st August: Lughnasadh (Lammas)
  • 1st November: Samhain (All Saints Day)

The names I’ve added are taken from the Celtic/neo-Pagan (and Christian terms) for these cross-quarter days. These timings are rough because the dates of the equinoxes and solstices vary from year to year. Imbolc is often taken to be the 2nd of February (Groundhog Day) and Samhain is sometimes taken to be October 31st, Halloween. But hopefully you get the point.

It seems to be a tradition in Maynooth that the Bank Holidays in May and August are are adjacent to examinations. This year the repeat examinations began on 1st August. My first paper (of four) was on Saturday and I have two more on Tuesday (tomorrow). That means by the end of tomorrow I will have three packets of scripts to mark…

There are two ways of looking at the fact that the day before these exams is a holiday. One is that students have an extra day to revise. Another is that the holiday is ruined by having to prepare for examinations.

Anyway, by the time the Solstice arrives I will hopefully away on sabbatical.

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