[WirelessGigabit]

Well, a device can get the time via GPS only.

If for whatever reason the system's time is just SO wrong then there's a change the HTTPS connection might fail because of certificate not valid yet / expired.

For this I think it's OK for it to be served over HTTP.

[smileybarry]

It also allows for transparent carrier caching, might even be why it's HTTP in the first place.

[WirelessGigabit]

But is this a file that you want to have cached?

Honest question! Not sure how often this is updated.

[marcus_holmes]

Every 10 minutes according to the article

[aaronmdjones]

The almanac is broadcast every 12.5 minutes. It is only updated about once a week.