For the second post in this series about Postcrossing’s statistics, we wanted to find out when does more postcard registering activity happen on the project. Intuitively, we know most postcrossers probably register their postcards later in the day, when they’re back home after work or school… but when exactly? And in which day of the week is most mail delivered?
To find out, Paulo chose all the postcards registered last year, adjusted their registering times to each recipient’s local timezone and then compiled the numbers, putting them together in a graph. Here is the result, showing the total number of postcards registered in each day of the week in 2017:
As one would imagine, many more postcards are registered between Monday and Friday than on weekends. Wednesday wins by a narrow margin, with a total of almost 900,000 postcards registered! Tuesday comes as a close second, while Monday is remarkably quiet in comparison. This is to be expected though, as many postal operators stop working during the weekend, and mail is only processed after they reopen.
Predictably, Sunday is the slowest day in Postcrossing, with a total of less than half a million postcards registered. As a curiosity, did you know that 2017 had 53 Sundays and just 52 of the each of the other days? Since there are 365 days in a year, there’s always an extra day to account for… but even with that extra Sunday, things were still quiet on the last day of the weekend.
Since we had our hands in the data, we decided to find out how these totals were distributed throughout the day! To do this, we summed the number of postcards registered in each hour of each day for the whole year, and then plotted this heatmap:
It’s easy to spot the red frenzy of activity, right? Despite Wednesday generally being the day with the highest number of registered postcards, the registering peak actually happened on Tuesday nights last year, with a cumulative total of 75,155 postcards registered between 8 and 9pm.
In contrast, the slowest time in Postcrossing in the whole year was on Mondays between 4 and 5am, with less than 1000 postcards registered in those early Monday hours throughout the whole year.
Do these statistics reflect your experience too, or were you perhaps surprised by them? Let us know in the comments!