If you like to see only those subscriptions that have been updated within last hour, then what you have to do is to enter filtering command which corresponds to that command, that is, 'updated<1hour'.
Here is how to construct a filtering command based on update dates
updated[separator][time expression for the update period]
After typing 'updated', that is name of the command, you have to type a separator, which can be greater-than sign ('>'), less-than ('<'), greater-than-or-equal-to sign ('>='), or less-than-or-equal-to sign ('<='). Following that separator, you have to enter the time expression for that update period.
In the sample filtering command above, separator ('<') is used to represent the time interval starting from given time period till the current time. And the time expression '1hour' means 'one hour'. When connecting all dots, it means that 'show only those subscriptions that have been updated in less than 1 hour'
If greater-than sign ('>') was used, then, it would only list those subscriptions that have been updated later than 1 hour ago.
Format of the Time Expression:
Time expression consists of two parts. While the first part is the number, the second part can be one of the 'minute', 'hour', 'day', 'week', 'month', and 'year'. If you like, you can also use the initial letters of each experession, such as letter 'h' for 'hour'. Since 'minute' and 'month' both have same initials, you can use 'min' for 'minute' and 'mon' for 'month'
To give an example, time expression '23day' means 23 days. Note that you don't have to make the expression plural. '2min' can be another example, which corresponds to 2 minutes.
Following lists sample filtering commands based on last updated dates of subscriptions.