This price of BitCoin is
relative to my personal benchmark
If the time does not refresh, that's because I imposed my own quota (that applies to me, too). If we hit the quota, we get the latest price on hand, with the proper timestamp of that price. Coinbase likely has a quota, but I don't know what it is and don't want to thump on them and find out.
The time is US Eastern Time / America/New_York / UTC -4 for most of the year on DST / Summer Time. The execution ("exe") time is a quick crosscheck on whether Coinbase was queried. With a Coinbase fetch, time is 250 - 400ms. Without a fetch, it's ~3ms.
The number I show is from the Coinbase API.